SUN SHADING SYSTEM WITH SCREEN LAMELLAS

Abstract: The most common sun screen lamellas are C-profiled plate strips (2) held on holders (6), which engage with the inner sides of the opposed bent-over edge portions (4). Also, special lamellas have been developed which are mounted in being clamped between holder members, which, as distance pieces, are inserted in holding grooves (20) in the basic carrier beams (12) of the system. According to the invention, however, it is perfectly possible to use the C-profiled plate strips in a similar holding system, when the holder members (8) are profiled to accommodate the exterior sides of the edge profiles (4). The holder members (8) thus profiled (10) may be used with identical design on both sides of the plate strips, when they are made as Z-shaped members mounted in pairs with mutually opposite orientation.

Description: SUN SHADING SYSTEM WITH SCREEN LAMELLAS The present invention relates to a sun shading system of the screen lamella type, for mounting out- hanging over window tops and whereelse it is actual to arrange a permanent shading system. The most common practice is to use C-profiled lamellas or plate strips that are mounted on individually associated lamella holders mounted rowwise on carrier beams arranged per¬ pendicularly projecting from the respective building wall, such that the lamellas extend between the beams in parallel with the building wall, while the lamellas are mounted on the holders in being clipped onto these, i.e. using the interior sides of the rounded edge profiles for the actual holding. The lamella holders are mounted upstanding or depending from beams of a relatively low height, as the beams should only have a holding groove for taking up a foot flange on the projecting lamella holders. Thus, the beams may be rather thin, but in return they will have to be supported in their projec¬ ting position, e.g. by means of upper or lower braces secured to the building wall. However, there is known also another basic con¬ struction of these shading systems, where the beams are of a considerably increased height, viz. corresponding to a little more than the height dimension of the lamel¬ las, and where the lamellas are specially designed with horizontal flange portions at both the top and the bot¬ tom edge, these flange portions being engageable in receiving grooves in the lamella holders, which are, themselves, isertable in holding grooves in the beams, all in such a manner that these holders will form dis¬ tance pieces between the lamellas and each one hold the lamella edges. In principle, the mounting of the lamel¬ las may then take place in an easier way, as they will be held by the use of the said distance pieces, which are configured according to the cross sectional shape of the lamellas, and without any clip-on work, just as the associated stronger beams may be mounted in a self sup¬ ported manner projecting from the building wall. The present invention is based on the consideration that it is possible, with advantage, to use a combinati¬ on of these known systems, namely by maintaining the C- profiled lamellas and mounting these between distance pieces profiled so as to be clampable about the lamellas in such a manner that these may be held solely by this exterior clamping, thus without any clip-on work being required. When the lamellas are held by clamping between the distance pieces it will not be necessary that the distance pieces can hold the lamellas individually. Thereby it can be avoided to use specially shaped lamel¬ las, and an important additional effect will be that in a given shading system it is then possible to use, se¬ lectively, both the self carrying, thick beams and the thin beams with projecting lamella holders holding the lamellas by the said clip action, while this is not used for the fixation to the thick beams. In the following the invention is explained in more detail with reference to the drawing, in which:- Fig. 1 is a perspective view of a section of a shading system according to the invention, shown during mounting, and Fig. 2 is a corresponding view of a carrier beam for the components shown in Fig. 1. In Fig. 1 is shown a pair of lamellas 2 of a con¬ ventional, C-profiled shape, i.e. with rounded edge areas 4. It is traditional that this type of lamellas are held on holders of the type shown at 6, i.e. coope¬ rating with the interior space of the lamellas. According to the invention, however, it is possible to hold also this lamella type by means of holders co¬ operating with the exterior of the lamellas, this being the primary illustration of Fig. l. Use is made of Z- shaped holders 8, which can be inserted i holding groov¬ es in a carrier beam as shown in Fig. 2, and these hol¬ ders are shaped with upper and lower profile portions 10, which, when the holders are brought together, will just close about the exterior of the edge areas 4 of the lamellas. Already thereby the lamellas will be effec¬ tively fixed, and there will be no need for the holders to additionally support the planar plate portion of the lamellas between the edge areas 4. It will be noted that the Z-shaped holders 8 are designed such that they can be brought rowwise into abutting juxtaposition in successively inverted positi¬ ons so that each pair of them will form a rhomb-shaped distance piece between the fixed lamellas 2. In princip¬ le, it will possible to replace the Z-pieces by inte¬ grally cast rhomb members, but the use of the Z- pieces, which are easy to mount, implies the possibility that, if desired, the distance between the lamellas 2 can be reduced merely by shortcutting the long, freely projec¬ ting, horizontal leg of the single Z-pieces. Thus, based on a single or only few standard sizes of these pieces it will be possible to work with practically any desired distance between the lamellas, including gradually vary¬ ing distances in the single systems. As mentioned, the Z-pieces are inserted in the beam shown in Fig. 2, designated 12. This beam is profiled with a hollow middle flange 14, the cavity of which is suited to be introduced over a projecting carrier iron 16 on a console plate 18 for mounting against a wall. By this carrier engagement it may be unnecessary to provide for further carrier means for the beam 12. At both sides of the middle flange 14 there is provided an upper and a lower holding groove 20 adapted to receive the horizon¬ tal insert portions of the Z-pieces 8. In principle, the lamellas 2 may be through-going across the beams 12, namely if the middle flange 14 is provided with holes enabling such a crossing, which is indicated to the right in Fig. 1, but in practice it is preferable to let the lamellas stop just next to the middle flanges 14. For this reason it is actual to use the Z-pieces 8,8 in pairs, inserted into positions just opposite each other, such that the lamellas 2 will seem to extend unbroken across the beams 12. A cover profile plate 13 may extend along the row of front ends of the beams 12, having a height corre¬ sponding to that of the beams, such that the shading system is terminated in a harmonica1 manner, see the right hand side of Fig. 2. The Z-pieces 8 or some of these may be prepared with a hole 9 having an inserted nut, whereby it is achievable that the Z-piece can be fixed in the groove 20 by screwing a bolt into the hole, the bolt thereby clamping against the middle flange portion 14. It may be sufficient to cause such a fixation of the innermost and the outermost Z-piece in each of the grooves 20, unless the holding members are pressed tightly together already by the mounting of the said foremost cover plate. Inver¬ sely, it may be desirable to make use of such clamp bolts in all of the holding members 8, as it is then possible to mount the lamellas with increased mutual distance without the use of any inserted, additional distance pieces. Thus, the holding system according to the invention is capable of accommodating conventionally shaped lamel¬ las 2, this implying two principal advantages, namely for one thing that the lamellas should not be produced particularly for use in that system, and for another thing that it will be possible to supplement a shading system of the discussed type with one or more carrier beams for the conventional holders 6 at places where it might be more suitable to use that kind of beams instead of the more voluminous beams 12.

Claims: C L A I M S : 1. A sun shading system of the type comprising a number of parallel, profiled beams projecting from a building surface and a number of screen lamellas mounted crosswise of the beams in holder members carried by the beams, said holder members being inserted in receiving grooves at the sides of the beams for holding the lamel¬ las and forming distance pieces therebetween, characte¬ rized in that the lamellas are of the type made as C-profiles, having opposed rounded edge areas, and that the holder members are profiled so as to clamp about just these edge areas, without otherwise being in hold¬ ing engagement with the inner sides of these areas. 2. A system according to claim 1, characterized in that at one or more local places therein there is provi¬ ded holding means of the type comprising holders for en¬ gaging with the inner side of the same C-profiled lamel¬ las. 3. A system according to claim 1, characterized in that the holders are constituted by Z-shaped holding members having an inclined stay, the front side of which is profiled for monolateral abutment with the rounded edge areas of a C-lamella, these holders being inserted with alternatingly inverted orientation in the holding grooves. 4. A system according to claim 1 or 3, characteri¬ zed in that the holding members are provided with cross holes for receiving tightening bolts for individual fix¬ ation of some or all of the holding members in the pro¬ filed beams.

Inventors: LUND-HANSEN BALSLEV KJELD, LUND-HANSEN, BALSLEV, KJELD
Applicants: DASOLAS INT AS, LUND HANSEN BALSLEV KJELD, DASOLAS INTERNATIONAL A/S, LUND-HANSEN, BALSLEV, KJELD
Application year: 1994
Main classification: E04F10
IPC codes: E04F10